Code Definition

P2124 — Throttle/Pedal Position Sensor D Circuit Intermittent

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P2124

P2124 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P2124 is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P2124 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

DTC P2124 indicates an intermittent fault in the Throttle or Pedal Position Sensor D circuit. The control module reads several throttle and accelerator pedal position signals to obtain a redundant and cross checked measure of driver demand, and sensor D is one of these signals, normally from the accelerator pedal assembly. The code sets when the D signal intermittently drops out, spikes, or disagrees with the correlated sensors rather than failing continuously. Because the system uses redundancy, an intermittent loss of sensor D often forces a reduced power or failsafe mode momentarily, produc...

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